⠈⠁ᵀ ᴱ ᴵ ᴸ ᴼ⠈⠁ (teiloq)

Perhaps the most serious way in which parasites that are usually harmless may become of great importance is illustrated by their introduction into new regions or, as is more often the case, by the introduction of new hosts into the region where the parasites are found. Under normal conditions the animals of a given region are usually immune to the parasites of the same region.